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Publication numberUS5916211 A
Publication typeGrant
Application numberUS 08/890,970
Publication dateJun 29, 1999
Filing dateJul 10, 1997
Priority dateNov 3, 1995
Fee statusPaid
Publication number08890970, 890970, US 5916211 A, US 5916211A, US-A-5916211, US5916211 A, US5916211A
InventorsHew W. Quon, David K. Quon, Wanda A. Quon
Original AssigneeQuon; Hew W., Quon; David K., Quon; Wanda A.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Permanent hair removal using visible red wavelength spectrum lasers
US 5916211 A
Abstract
A device for permanently removing hair and a process for using that device comprising a laser emitting light in the visible red wave length spectrum, the laser light being used to destroy the hair follicle. A high energy laser is used with the light being delivered in pulses of from about 1 to 1000 microseconds.
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Claims(2)
What is claimed is:
1. A method for permanently removing hair comprising:
a) generating a pulsed beam of red spectrum laser light using a laser having a power output from 10 joules/cm2 to 50 joules/cm2, and
b) irradiating a hair follicle with the pulsed beam of light, said beam of light having a pulse duration of from 1 microsecond to 1000 microseconds.
2. The method of claim 1 wherein the beam of light has a wave length of from about 600 to about 800 nm.
Description

This is a continuation of application Ser. No. 08/552,790, filed Nov. 3, 1995 now abandoned.

BACKGROUND

The present invention relates to a process for removing unwanted hair on humans or animals.

Hair grows in three different cycles. The traditional method of hair removal, namely thermolysis or electrolysis, require the use of a needle or a chemical. Further, these methods can only destroy hairs in their anagen stage. Still further, the chemicals can cause a reaction on the skin surface and the needle can cause injury to the skin as well as be a source for infection.

Thus, there is a need for a process for removing hair during all stages of hair development and without the use of harsh chemicals or instruments which can cause scarring or be a source of infection.

SUMMARY

These needs are met by the present invention which comprises a high power laser emitting a red wavelength beam of light with a sufficiently long pulse time to destroy the hair follicle. With a properly configured laser, the laser light selectively and permanently destroys the hair follicle without damaging the surrounding tissue or blood vessels.

DESCRIPTION

Hair grows in three different cycles. Thermolysis and electrolysis are only effective in the anagen stage. However, all hair follicles, regardless of the stage of development of the hair, share a basic property in that the hair follicle contains abundant melanin. I have now discovered that by use of a high powered laser emitting a beam of visible red light of an appropriate power density and pulsewidth, each individual hair can be selectively destroyed by coupling directly with the melanin within the hair follicle without causing injury to other tissue.

Permanent destruction of hair is accomplished by focusing the optical output of a high power laser (10-50 joules/cm2) operating in the red wavelength spectrum (600-800 nm) on the base of the hair to be eliminated. The laser generated light is able to penetrate the skin or transmit along the pore out of which the hair is growing to reach the melanin in the hair follicle. One skilled in the art will recognize that the laser beam is not delivered continuously but consists of a series of pulses of light. If the duration of individual pulses of the laser beam is from 1 to 1000 microseconds the laser energy will destroy the hair follicle without causing damage to the surrounding vascular tissue or skin, thus resulting in permanent destruction of the hair.

Although the present invention has been described in detail with reference to a certain preferred version and use thereof, other versions and uses are possible. For example, the process described can be supplemented and improved by use of other techniques described in prior art. However, such added procedures, or other procedures to prepare the skin surface for treatment, only enhance the process described above. Therefore, the spirit and scope of the appended claims should not be limited to the description of the preferred versions contained herein.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4388924 *May 21, 1981Jun 21, 1983Weissman Howard RMethod for laser depilation
US4617926 *Jan 30, 1984Oct 21, 1986Sutton A GunillaDepilation device and method
US5059192 *Apr 24, 1990Oct 22, 1991Nardo ZaiasMethod of hair depilation
US5182857 *Oct 29, 1990Feb 2, 1993U.S. Philips Corp.Shaving apparatus
US5226907 *Oct 29, 1991Jul 13, 1993Tankovich Nikolai IHair removal device and method
US5425728 *Jan 19, 1993Jun 20, 1995Tankovich; Nicolai I.Hair removal device and method
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US7044959 *Mar 12, 2003May 16, 2006Palomar Medical Technologies, Inc.Method and apparatus for hair growth management
US7217267 *Feb 6, 2004May 15, 2007Harvey JayHair treatment method
US7758621May 19, 2006Jul 20, 2010Palomar Medical Technologies, Inc.Method and apparatus for therapeutic EMR treatment on the skin
US7763016Dec 12, 2005Jul 27, 2010Palomar Medical Technologies, Inc.Light energy delivery head
US7837675May 31, 2005Nov 23, 2010Shaser, Inc.Method and device for skin treatment with replaceable photosensitive window
US7935107May 19, 2010May 3, 2011Palomar Medical Technologies, Inc.Heads for dermatology treatment
US7942915Nov 13, 2006May 17, 2011Palomar Medical Technologies, Inc.Phototreatment device for use with coolants
US7942916Dec 1, 2006May 17, 2011Palomar Medical Technologies, Inc.Phototreatment device for use with coolants and topical substances
US8002768Jul 21, 2010Aug 23, 2011Palomar Medical Technologies, Inc.Light energy delivery head
US8109924Mar 24, 2011Feb 7, 2012Palomar Medical Technologies, Inc.Heads for dermatology treatment
US8182473Nov 22, 2006May 22, 2012Palomar Medical TechnologiesCooling system for a photocosmetic device
US8246613Oct 4, 2010Aug 21, 2012Shaser, Inc.Method and apparatus of treating tissue
US8268332Apr 1, 2005Sep 18, 2012The General Hospital CorporationMethod for dermatological treatment using chromophores
US8328794Sep 22, 2008Dec 11, 2012Palomar Medical Technologies, Inc.System for electromagnetic radiation dermatology and head for use therewith
US8328796Jul 11, 2011Dec 11, 2012Palomar Medical Technologies, Inc.Light energy delivery head
US8346347Sep 15, 2006Jan 1, 2013Palomar Medical Technologies, Inc.Skin optical characterization device
US8393330Jun 25, 2012Mar 12, 2013Harvey H. JayHair treatment system and method
US8915948Feb 15, 2008Dec 23, 2014Palomar Medical Technologies, LlcMethod and apparatus for photothermal treatment of tissue at depth
US9028536Aug 3, 2009May 12, 2015Cynosure, Inc.Picosecond laser apparatus and methods for its operation and use
US9452013Sep 17, 2012Sep 27, 2016The General Hospital CorporationApparatus for dermatological treatment using chromophores
US20040034319 *Mar 12, 2003Feb 19, 2004Palomar Medical Technologies, Inc.Method and apparatus for hair growth management
US20040133251 *Oct 23, 2003Jul 8, 2004Palomar Medical Technologies, Inc.Phototreatment device for use with coolants and topical substances
US20050038418 *Dec 16, 2003Feb 17, 2005Palomar Medical Technologies, Inc.Light energy delivery head
US20050049657 *Feb 6, 2004Mar 3, 2005Harvey JayHair treatment method
US20060020260 *May 31, 2005Jan 26, 2006Dover Jeffrey SMethod and apparatus of treating tissue
US20080262484 *Apr 23, 2007Oct 23, 2008Nlight Photonics CorporationMotion-controlled laser surface treatment apparatus
US20110082446 *Oct 4, 2010Apr 7, 2011Shaser, Inc.Method and Apparatus of Treating Tissue
Classifications
U.S. Classification606/9, 607/89, 606/3
International ClassificationA61B18/20
Cooperative ClassificationA61B2018/00476, A61B2018/00452, A61B18/203
European ClassificationA61B18/20H
Legal Events
DateCodeEventDescription
Sep 10, 2002FPAYFee payment
Year of fee payment: 4
Oct 6, 2006FPAYFee payment
Year of fee payment: 8
Jun 29, 2010FPAYFee payment
Year of fee payment: 12